Plenty is a play by David Hare, first performed in 1978, about British post-war disillusion. Susan Traherne, a former secret agent, is a woman conflicted by the contrast between her past, exciting triumphs—she had worked behind enemy lines as a Special Operations Executive courier in Nazi-occupied France during World War II—and the mundane nature of her present life, as the increasingly depressed wife of a diplomat whose career she has destroyed. Viewing society as morally bankrupt, Susan has become self-absorbed, bored, and destructive — the slow deterioration in her mental health mirrors the crises in the ruling class of post-war Britain.